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. 2019 Apr 8;9(19):10781–10788. doi: 10.1039/c8ra09926j

Chemical structures of the 35 investigated dietary flavonoids.

Subclass Name Substitutions Structure
OH OCH3 Others
Flavones Flavone graphic file with name c8ra09926j-u1.jpg
7-OH flavone 7
Chrysin 5,7
Baicalin 5,6
Baicalein 5,6,7
Wogonin 5,7 8
Apigenin 5,7,4′
Luteolin 5,7,3′,4′
Hispidulin 5,7,4′ 6
Tangeretin 5,6,7,8,4′
Nobiletin 5,6,7,8,4′,5′
Flavonols Galangin 3,5,7 graphic file with name c8ra09926j-u2.jpg
Kaempferide 3,5,7 4′
Kaempferol 3,5,7,4′
Kaempferitrin 5,4′ 3,7-Dirhamnoside
Quercetin 3,5,7,3′,4′
Myricetin 3,5,7,3′,4′,5′
Fisetin 3,7,3′,4′
Rutin 5,7,3′,4′ 3-a-l-Rham-1,6-d-Glc
Isoflavones Formononetin 7 4′ graphic file with name c8ra09926j-u3.jpg
Genistein 5,7,4′
Daidzein 7,4′
Biochanin A 5,7 4′
Tectorigenin 5,7,4′ 6
Puerarin 7,4′ 8-C-Glucoside
Flavanone Dihydromyricetin 3,5,7,3′,4′,5′ graphic file with name c8ra09926j-u4.jpg
Naringenin 5,7,4′
Naringin 5,4′ 7-Neohesperidose
Flavanonol C (2,3-trans) 3,5,7,4′,5′ graphic file with name c8ra09926j-u5.jpg
EC (2,3-cis) 3,5,7,4′,5′
ECG (2,3-cis) 5,7,4′,5′ 3-Gallate
EGC (2,3-cis) 3,5,7,3′,4′,5′
EGCG (2,3-cis) 5,7,3′,4′,5′ 3-Gallate
GC (2,3-trans) 3,5,7,3′,4′,5′
GCG (2,3-trans) 5,7,3′,4′,5′ 3-Gallate